Hair clipper



F. L. GRAY mun CLIPPER Filed Sent. 27, 1922 '2 Sheets-Sheet 2 13 15219551: ray 5- i9 3 2* Patented Aug. 19, 1924,."

uNirso STATES PA'rsNroFnca."

some L. GRAY, or main, care.

mm current Application med September 21, 1922. Serial in. 0,157.

tion therefor and improved parts for use therein. I

lt'has been quite conventional to provide a cutting bar having teethuponwhich reciprocates a knife bar having corresponding teeth.- By thususing a stationary member below and a reciprocating bar above,

' the tendency is to move the hair ends with the upper teeth and notpositively sever the hair as desired. v e

Many attem ts have been made in the past to meet t 's condition, amenothers is the use of a brush attachment s own in my earlier Patent No.1,404,603, issued J an. 24, 1922 which served its purpose as thereindicate It is i now my mtention to simpli my construction and, fullyovercome t e difficulty of moving the hair as the cutter teeth advancetoward it, and to' do this without. the use of a feeding brush, thoughthe latter may be used with my present improvement if it is desired.

vIt is an object of the present invention to produce an efficient cutterfor long, as

' blade, so that the upper or fixed blade willhold the hair ends in wellas for short hair, and to feed the hair evenly and uniformly to thecutting teeth.'

It is a further object to provide a comb base late and two blades in mycutter, and or thisv reason .I- will place the -sta+ tionary blade abovewith the reciprocating cutter blade below or under the stationaryposition whilethe lower teeth travel in their course. 1

It is a further objectto also rovide a spring member to hold the mova leblade against the upper blade.

The device is adapted for either manual or power actuation and can beused-with the relative arrangements ofparts here disclosed or by someobvious changes without losing the advantages of the mounting for themovable blade here shown. Finally, it is an especial obiect of my inapedslot for :tion of the base p the movin blade to-receive the toe of theactuating ever to cause the said blade to hug the wall against which itmoves and thereb hold the blade in strict alinement. Wit these and otherobjects in view, my

invention resides in the novel featuresand combinationof partshereinafter more particularly described and pointed out in the claims.

In the drawingsi Figure 1 is a plan view of the clipper; Figure 2 is aview in vertical section. taken on the line 2-2of Fig. 1;

Figure 3 isan inverted plan view; Figure4 is a side view in elevation;Figure 5-is a top view of the device with the top plate removed; p

.Fi e 6 'is a viewsimilar to Fig. 5, but

showmg the lever and blade in another posi-.

tion of its throw;

Figure 7 1s a plan view of the movable blade Figure. 8 is a side view ofthe. two cutter blades, and w x Figure 9 is a longitudinal, vertlcalsecate and the pressing spring.

Similar referencecharacters are. used to indicate corresponding partsthroughout the several views.

A designates fixed blade or cutting comb which is in the'form of a fiatplate, B V

is the base plate upon which the entire devicerests w en in operation,(3 is *the serrated lmife reciprocating between A and B,

D is an actuating lever of the first class for operatingghe knife C, andE is a flat spring situated tween parts B and D forexertan upwardpressure against, the knife C.

e comb element A has a Hat upper surface and hollowed out cavityl on itslower face so that the surface against which the blade C will workisreduced as much as possible. Accordingly, the upper surface of movableblade C contacts a forward portion of A and: a thin ed 26 as shownFigs.'2 and 4. .The' part has two perforations for receiving screwelements 9 near its edge, the screws registering with the a ertures 21of thebase plate B for holding tlib plates in rigid but detachableengagement.

Near the center of the late is another aperture'for receiving t erein astem 3 having an outside manual operating fiat device t and theinner'end of the stem being externally threaded for a purpose laterexplained.

At a point at the rear of the stem 3, is

another aperture in the plate A through which is inserted the screwmember 5.which is provided withthe inner reduced end 11 which isthreaded and designed toeng'age a threaded socket in a raised neck part7 integral with the base plate B. The midpart between th upper end ofthe stem and said threaded part 11 serves for the flat shape and arebent upwardly in parallel relation to each other just to the rear of thepivot element 5. The rear end of the bar D may be transversely operated,either manual orpower means to swin the blade C transversely of the axis0 the clipper, reaching the extreme positions of the blade shown in thetwo views 5 and 6 of the drawings.

Between the parts A and B is' nounted the bar D for oscillation in ahorizontal plane or some plane parallel to the plates A and B. Midwaythe length of said bar is an aperture for receiving therein the pin 5,the said aperture being thickened to form a strengthened-neck 8 foroscillation about the pivot 5. The bar has also an elliptical slot 24just forward of said pivot, for permitting transverse movement of thebar about the stem 3, as before explained.

The base plate B has longitudinal parallel fins 12 on its lower surface,as shown in Figs. 4 and 9, in particular. The rearward portion of theplate B, designated 10, is

curved upwardly as shown at Figs. 2, 4 and 9. In a hollowed out portionof the said plate B, is mounted a longitudinallyarranged spring plate Ehaving a forward end 16 normally exerting an u ward thrust against thelower surface of G to press the same against the lower surface of, theprojecting edges of the late A. Said spring is fixed to the plate alittle to the rear of the pivot end 11, and is cut out to form yokeextensions encircling the neck 7 These ends have openings 25 throughwhich screws 6,project and are secured to the base plate, as beforeexplained. v

A mid-point of the spring E is formed with a transverse bowed portion 14which is rectangular in shape and perforated to receive therethrough thescrew 3. Below the saidbowed portion, is mounted a nut 13 Y fitted tothe threaded portion of the said -"screw. Rotation of the said screw bymeans of the wing parts 4, raises the nut 13 against the bow 14 and thusadjustably increases out that only the forward end of the spring"contacts the knife C. 1

It is obvious, from what has been explained thus far, that the knife Cis mounted between the stationary parts A and B.

These three partsA, C and B have serrations 18, 19 and 20, respectively.The teeth 18 and 19 arecutting teeth, while 20 are merely guidingserrations 20 or forward projections of the plate B which servc to holdthe hair fromtransverse movement while the cutters A and C are severingthe same, only the knife G being the movable part. This knife C isactuated by the part 2 of the 'lever,D work.ing in the slot 15 which isof special construction which will now be described. I

The slot 15 is somewhat elon ated in shape in the direction of theknife. It is substantially frusto-conical in outline, the forward edgebeing the lower base line which is strai ht. The upper base or shortersurface ine is somewhat curved inwardly at 23 as seen at Fig. 7 whilethe oblique sides are designated in said view by numeral 22. Thisconstruction has a very important function. "When the said side wallsare made perpendicular to the base of the slot, as they have sometimesbeen made, the extreme throw of the'lever end 2 tends to thrust theknife blade C forward away from the shoulder at the under face of theplate A. W hen* however, these diagonal sides 22 are constructed tobeperpendicular to the length of the lever end or toe 2, the thrust of thelever will have no tendency to shift the blade or knife C forward awayfrom its guide. See Figs. 5 and 6 in which the relative position of theparts 22, 2 and D are shown very clearly in either position of the throwof th knife. The rear side of the slot 15 is convexly curved as shownclearly in Figs. 5 to 7, and there designated by 23. This completes theexercise of this function of holding the knife in close proximity to theguide shoulder 27, since at each extreme thrust the end edge of 2 willbe seated in the notch of said curve 23 and tend to prevent forwardmovement of the blade.

Rsum: The stationary blade A isdetachably secured to the base B by thescrew 3, the back strip serving as an extension of the blade A anddesignated by 28 in the drawings. The reciprocating knife C being beingplaced in superposition as shown, the

screws 9 will fix the plate A to the plate B, and the pivot screw 5 willsecure the forward end of 28 in position, serve as a ivot for the, leverD and-be fixed in the ann us 7.

' 6 fix the yoke ends of t e spring by being secured into the base platethrough 'theey'elets 25. The nut 13 is then seated within the bow 14,and the screw 3 fixed in said nut thus tightening the forward end of thespring up against the blade G. The device ma now be grasped by the parts28 and 10, an thelever moved transversely by any appropriate means. Thislatter is not a feature of my present invention, so. is not disclosedindetail.

There are many obvious changes that may be made without departing fromthe 3 int of my invention--w ile the knifeC is ere shown and-describedas below the stationary blade A yet the position of the twoblades mayevi ently be'reversed without losing the man advantages gained b usingthe slot and ever structure describe here with much detail. Also, theparts 28 and vA may be made in one piece if it is desired.

It is to be noted that the two parts A and B remain fixed and hold thehairin'position while the knife C works between them. The teeth 18 and19 only are cuttin teeth, while the pron or pro ections 20 rom the'fins12 serve t eir purpose though not in cutting contact with the teeth ofthe said blades.

What I claim as new and desire to secure by Letters Patent is: v

1. In a clip er, a base plate, a cutting comb rigid w1t the base plate,a movable serrated knife between the base and comb,'

and a spring pressing the knife away from the base into cutting contactwith the comb.

2. In a clipper, a base plate, a cutting comb ri id with the base plate,a reci rocable serrate knife between the base ate and comb, a springpressing the kni e-against the comb, means for admsting the pressure ofthe spring, and a lever for reciprocating the knife.

3. In a clipper, a base plate, a cutting comb ri id with the base plate,a reciprocable serrate knife supported above the said plate and beneaththe comb and having a slot therein, an o crating lever-having an endentering the s at and fulcrumed back of the knife, a stationary guidefor the rear ed e of the knife, and means for holding the ife againstthe comb.

4. a clipper, a base plate, a cutting comb r1 1d with the base plate, areciprocable serrate knife supported above the said plateand beneath thecomb and having a slot therein, an operating lever having an endentering the slot and fulcrumed back of the knife, the sides of. theslot divergin away from the fulcrum of the operating ever, a stationaryguide for the rear edge of. the knife, and means for holding the knifeagainst the comb.

'fulcrumed in the rear of the '5. In a clipper, a base plate, a cuttingcomb ri id with the base plate, a reciprocable serrate knife supportedabove the said plate and beneath the comb and having a slot therein, anoperating lever having an end entering the slot and fulcrumed back ofthe knife, a stationary guide for the rear edge of the knife, the rearedge of the slot being curved to maintain contact between that ed e ofthe slot andthe end of the lever whi e the knife moves in a straightline, and means for holding the. knife against the comb.

6. Ina clip er atransversel reciprocable serrated km e having an eongated slot therein, a stationary guide for the back of the knife, andan operating lever fulcrumed in the rear of the knife, the rear edgeofthe I slot being curved to maintain contact between that ed e of tween.that edge of the slot and the end of the slot and the end' of the leverwhile the knife is moved in a from the fulcrum of the operating thelever while the knife is moved in a strai ht line.

n a clipper, a transversely reciprocable knife having an elongated slottherein and a pivoted operating lever with its end in the slot, the endsof the slot diverging laterally away from the fulcrum of the lever.

'9. In a clipper, a reciprocable serrated knife having an elongatedquadrilateral slot therein and an operatin lever having its end in theslot, each. en of the slot being parallel to the longitudinal axis ofthe lever when the end of the lever reaches the extremity of themovement towards that end of the slot.

10. In a clipper, a transversely recipro- I cable knife having anelongated quadrilateral slot therein and a pivoted operating lever withits end in the slot, the ends of the slot diverging laterally awayfrom'the fulcrum of the lever and the rear edge bem tw een that edge ofthe slot and the end of the lever.

11. In a clipper, a stationary cuttin comb, a reci rccable knife mountedbeneat the comb an having an elongated slot therein and a pivotedoperating lever with its end in the slot, the ends of the slotdivergaway from the fulcrum of the lever.

Tn testimony whereof I hereunto afiix my signature.

' FOREST L. GRAY.

inwardly convex to maintain contact be-.

